Porting Indigo2->Fuel - SGI

This is a discussion on Porting Indigo2->Fuel - SGI ; Hi gents/ladies,
We have a complex application that currently runs on Irix on some Indigo2's
from circa '95. We want to consider running it on some of the new Fuel
Desktops (also running Irix). What problems would we likely encounter ...

Porting Indigo2->Fuel

Hi gents/ladies,
We have a complex application that currently runs on Irix on some Indigo2's
from circa '95. We want to consider running it on some of the new Fuel
Desktops (also running Irix). What problems would we likely encounter when
attempting to port the code, or would it be plain sailing?
The application uses OpenGL (though only basic polygons and lines), serial
port access, IP networking and shared memory.